Fertilizer Minerals
Metasomatic phosphatization.
The highly workable open-cut deposit as exemplified by the phosphate deposits of Isabel in Leyte, Guihulngan in Negros Oriental, Pinamungahan, Balamban, Ronda, Barili and Tuburan in Cebu are produced by a process of _______
Aragonite
is the dominant component of coralline limestone
Massive deposit
occupying the full width of the fracture belongs to the second type
Kang-abohon Cave
A typical sequence of either guano or phosphatized guano is resting on the surface of phosphate rock as preserved in _______
Seawater
Another potential source of MgO and CO2 is _____
Phosphorous and Nitrogen
Guano provide the most important organic source of ___ and ____
soil conditioner
In US, peat is extensively used as _________
Fibrous
In industries, _______ peat on account of its moisture-absorbing quality is widely used as litter material for breeding livestock.
fuel
In some European countries, peat is used as ____
Fresh guano
It contains nitrogen, ranging from less than 1 to 6 percent; phosphorous pentoxide from 0.25 to 10 percent, and occasionally with potash.
Barangay Kang-abohon Munipality of Ronda, Cebu
Kang-abohon Cave is found in _____
Dolomitic Limestone
Limestone rich in magnesia is called _______________
Calcination
Magnesium is produceed by ____ of magnesium carbonate
Dolomitic limestone
The coastal or near-coastal distribution and occurrence of __________________ in Cebu suggest that sea water may have contributed to dolomitization
Lupon
The largest magnesite is found in ________ where they occur as veins in thin shells of highly fractured weathered peridotite.
Sitio Puntalinao, Barangay Dinagsa-an, Municipality of Banay-Banay, Province of Davao Oriental.
The ma'jor company processing magnesite is found in _____________
Hubay Formation
The phosphate deposit in Isabela is hosed by what formation
Dolomitization
The transformation of normal limestone to dolomitic limestone or dolomite is known as __________
1952
The year ____ marks the earliest recorded commercial
Barangay Liberty, Ormoc City, Leyte
This 103 hectare singly explored peat deposit is found in _______________
Dumarao, Capiz
V.E. Elicaño of the then Division of Mines, Bureau of Science assessed guanobearing caves in ______
Brain-like
_____________type constituting the bulk of the deposit may have originated as normal products of weathering.
Dolomite
a carbonate of calcium and magnesium, is ideally composed of 21.70 percent magnesia, 30.40 percent lime and 47.90 percent carbon dioxide.
Limestone
a carbonate rock consisting mainly of calcite or aragonite is the most thoroughly exploited of all the sedimentary rocks.
Magnesite
a natural form of magnesium carbonate with ideal magnesia content of 47.60 percent, is an important source of magnesium for fertilizer
Guano
accumulated excrement and remains of birds and bats
Magnesium
an essential element in plant and animal metabolism, and is added to fertilizers in the form of caustic-calcined magnesia.
April 1979
domestic magnesite production commenced only in _______
Folded Sheets
filling the fractures constitute the third type.
Clustered nodules or concretions
found on both walls of the fracture constitute the first type.
1922
initial search for and investigation of guano deposits dated back in _____
Oyster-shell Lime
is crushed oyster shell that has been calcined and used as agricultural lime or simply aglime.
Peat
is dark brown to black carbonaceous residuum produced by the partial decomposition and disintegration of mosses, sedges, trees, and other plants that have grown or accumulated in shallow lakes, marshes, and tidal flats.
Open-cut deposits
is exemplified by phosphorite associated with massive to poorly bedded, porous, coralline, and frequently fractured limestone formations of Pliocene to Pleistocene age.
Guano-derived phosphate rock
is found singly or in combination with guano
Phosphatized limestone
is generally porous, vuggy, friable, hard and occasionally compact.
Hydrated Lime
is hydrated calcium oxide, Ca(OH)2, with 24 percent water.
High-calcium lime
is made from burning limestone with 50 to 55 percent calcium oxide and 40 to 55 percent carbonic acid, containing small percentages of magnesia,silica, iron, and alumina. A lime derived from these raw materials yields 90 to 98 percent calcium oxide.
Fresh guano
is usually dark chocolate brown, soft, oblong, and about the size of a grain of palay which eventually disintegrates into pulverulent masses
Phosphate Rock
made up primarily of chloride, fluoride, carbonate, or hydroxyl forms of apatite, is the main source of phosphate in chemical fertilizers.
Humus
peat contains a large fraction of fibrous and porous organic matter or __________
Phosphatic soil
produced by the mixing of transported soil material with droppings and remains of bats and birds deposited inside the cave, is relatively loose and much lighter in color than fresh guano.
Metasomatism
resulted from solutions leached out from phosphatic guano.
A.R. Chemical Traders
the major company processing magnesite
Phosphatized guano
underlies the phosphatic soil in a normal sequence of guano deposition, relates to the comparatively purer and older deposits of guano
Magnesian Lime
used in agriculture contains 5 to 20 percent magnesia and 70 to 85 percent calcium oxide. A bushel of magnesian lime weighs about 70 pounds; a highcalcium lime, 90 to 95 pounds